OTTAWA, ON - OCTOBER 24: A soldier in the Canadian Army stands guard at the National War Memorial during a ceremony at the memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: A soldier in the Canadian Army stands guard at the National War Memorial during a ceremony at the memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: City workers relocate flowers to a memorial (the flowers were previously placed at a police barricade that was later removed) to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: A woman sits in silence while paying her respects to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: A boy lays flowers at a memorial to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: City workers relocate flowers to a memorial (the flowers were previously placed at a police barricade that was later removed) to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: Two men stand in silence and pay their respects to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: City workers relocate flowers to a memorial (the flowers were previously placed at a police barricade that was later removed) to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: Canadian Army soldiers carry the casket carrying Cpl. Nathan Cirillo, two days after he was shot dead by a gunman while he guarded the National War Memorial, to a hearse during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People watch as the hearse carrying the body of Cpl. Nathan Cirillo, who was killed two days ago by a gunman while he guarded the National War Memorial, drives past during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: Soldiers in the Canadian Army stand guard at the National War Memorial during a ceremony at the memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: A woman pays her respects to Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed two days ago while standing guard in front of the National War Memorial by a lone gunman, on October 24, 2014 in Ottawa, Ontario, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People watch as the hearse carrying the body of Cpl. Nathan Cirillo, who was killed two days ago by a gunman while he guarded the National War Memorial, drives past during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: Kathy Cirillo (C), the mother of Cpl. Nathan Cirillo, weeps as the casket carrying her son is loaded into a hearse, two days after he was shot dead by a gunman while he guarded the National War Memorial, during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: A woman places flowers in rememberance of Cpl. Nathan Cirillo during a ceremony at the National War Memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a Canadian Army soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: Canadian Prime Minister Stephen Harper (L) shakes hands with a soldier in the Canadian Army during a ceremony at the National War Memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People watch as the hearse carrying the body of Cpl. Nathan Cirillo, who was killed two days ago by a gunman while he guarded the National War Memorial, drives past during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People watch as the hearse carrying the body of Cpl. Nathan Cirillo, who was killed two days ago by a gunman while he guarded the National War Memorial, drives past during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: The casket carrying Cpl. Nathan Cirillo, a soldier killed two days while he guarded the National War Memorial, is loaded into a hearse during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People place flowers in rememberance of Cpl. Nathan Cirillo during a ceremony at the National War Memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a Canadian Army soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People watch as the hearse carrying the body of Cpl. Nathan Cirillo, who was killed two days ago by a gunman while he guarded the National War Memorial, drives past during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: A woman places flowers in rememberance of Cpl. Nathan Cirillo during a ceremony at the National War Memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a Canadian Army soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People watch as the hearse carrying the body of Cpl. Nathan Cirillo, who was killed two days ago by a gunman while he guarded the National War Memorial, drives past during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: Canadian Prime Minister Stephen Harper (C) meets with soldiers in the Canadian Army during a ceremony at the National War Memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: Kathy Cirillo (C), the mother of Cpl. Nathan Cirillo, weeps as the casket carrying her son is loaded into a hearse, two days after he was shot dead by a gunman while he guarded the National War Memorial, during a precession from Ottawa to Cirillo's hometown of Hamilton, Ontario, on October 24, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: A soldier in the Canadian Army stands guard at the National War Memorial during a ceremony at the memorial on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 24: People attend a ceremony at the National War Memorial, where Cpl. Nathan Cirillo was killed two days ago, on October 24, 2014 in Ottawa, Canada. Two days ago a gunman killed Cpl. Nathan Cirillo, a Canadian Army soldier guarding the memorial. The gunman then stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: A sign reading, 'We are not afraid, We are Strong' is posted in memorial of Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: The flag atop the Canadian Parliament building is flown at half-staff one day after Cpl. Nathan Cirillo of the Canadian Army Reserves was killed while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: A flag flies at half-staff at the National War Memorial, where Cpl. Nathan Cirillo of the Canadian Army Reserves was killed yesterday while standing guard by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: A police cruiser sits near the National War Memorial, where Cpl. Nathan Cirillo of the Canadian Army Reserves was killed yesterday while standing guard by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: Flowers are left in front of the Canadian Parliament building in memorial for Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: A photo of Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, sits amongst wreaths and flowers left to remember him, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: Flowers and wreaths are left in memorial of Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: Flowers and wreaths are left in memorial of Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: Laurie Hawn (C), a member of the Canadian parliament, speaks to the media outside the House of Commons in the Canadian Parliament one day after a gunman infiltrated the building and was shot dead, on October 23, 2014 in Ottawa, Canada. The gunman killed a reserve soldier in the Canadian Army standing guard at the National War Memorial before stormed the parliament building where he was killed. (Photo by Andrew Burton/Getty Images)

Royal Canadian Mounted Police Commissioner (RCMP) Bob Paulson (L) and Ottawa Police Service Chief Charles Bordeleau speak to the press at RCMP headquarters in Ottawa on October 23, 2014, one day after multiple shootings in the capital city and Parliament buildings left a soldier dead and others wounded. Paulson said the suspected gunman, Michael Zehaf-Bibeau, was not being investigated by the RCMP as a 'high-risk' individual. AFP PHOTO/PETER MCCABE (Photo credit should read Peter McCabe/AFP/Getty Images)

OTTAWA, ON - OCTOBER 23: Maxime Bernier (C), a member of the Canadian parliament, speaks to the media outside the House of Commons in the Canadian Parliament one day after a gunman infiltrated the building and was shot dead, on October 23, 2014 in Ottawa, Canada. The gunman killed a reserve soldier in the Canadian Army standing guard at the National War Memorial before stormed the parliament building where he was killed. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: Members of the media wait to speak to Canadian politicians outside House of Commons in the Canadian Parliament one day after a gunman infiltrated the building and was shot dead, on October 23, 2014 in Ottawa, Canada. The gunman killed a reserve soldier in the Canadian Army standing guard at the National War Memorial before stormed the parliament building where he was killed. (Photo by Andrew Burton/Getty Images)

OTTAWA, CANADA - OCTOBER 23: In this handout photo provided by the PMO, Prime Minister Stephen Harper (C) delivers remarks in the House of Commons addressing the attacks in the Nation's Capital on October 23, 2014 in Ottawa, Canada. The gunman, identified as Michael Zehaf-Bibeau, was shot and killed by Kevin Vickers while still inside the Parliament building. (Photo by Jason Ransom/PMO via Getty Images)

OTTAWA, CANADA - OCTOBER 23: In this handout photo provided by the PMO, Prime Minister Stephen Harper (C) delivers remarks in the House of Commons addressing the attacks in the Nation's Capital on October 23, 2014 in Ottawa, Canada. The gunman, identified as Michael Zehaf-Bibeau, was shot and killed by Kevin Vickers while still inside the Parliament building. (Photo by Jason Ransom/PMO via Getty Images)

OTTAWA, CANADA - OCTOBER 23: In this handout photo provided by the PMO, Prime Minister Stephen Harper (R) and his wife Laureen Harper arrive at the National War Memorial to lay flowers in honour of Corporal Nathan Cirillo who was killed yesterday while standing guard at the memorial, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Jason Ransom/PMO via Getty Images)

OTTAWA, ON - OCTOBER 23: A sign reading, 'We are not afraid, We are Strong' is posted in memorial of Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: The flag atop the Canadian Parliament building is flown at half-staff one day after Cpl. Nathan Cirillo of the Canadian Army Reserves was killed while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: A flag flies at half-staff at the National War Memorial, where Cpl. Nathan Cirillo of the Canadian Army Reserves was killed yesterday while standing guard by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: A police cruiser sits near the National War Memorial, where Cpl. Nathan Cirillo of the Canadian Army Reserves was killed yesterday while standing guard by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: Flowers are left in front of the Canadian Parliament building in memorial for Cpl. Nathan Cirillo of the Canadian Army Reserves, who was killed yesterday while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON - OCTOBER 23: A flag next to the Canadian Parliament Building is flown at half-staff one day after Cpl. Nathan Cirillo of the Canadian Army Reserves was killed while standing guard in front of the National War Memorial by a lone gunman, on October 23, 2014 in Ottawa, Canada. After killing Cirillo the gunman stormed the main parliament building, terrorizing the public and politicians, before he was shot dead. (Photo by Andrew Burton/Getty Images)

OTTAWA, ON- OCTOBER 23 - The flag on the Centre Block of Parliament Hill flies at half mast as Canada mourns the death of Cpl. Nathan Cirillo. Police continue to investgate in the aftermath of a shooting in Ottawa, where a soldier murdered at the War Memorial and a gun battle in Parliament killed the alleged gun man. in Ottawa. October 23, 2014. (Steve Russell/Toronto Star via Getty Images)

Thomas Mulcair (L), leader of the New Democratic Party of Canada and leader of the Official Opposition in Canada, departs the National War Memorial, one day after multiple shootings in the capital city and Parliament buildings left a soldier dead and others wounded. A gunman whose name was on a terror watch list killed a soldier and attempted to storm Canada's parliament October 22 before the assembly's sergeant-at-arms shot him dead. The attack -- the second this week targeting Canadian military personnel -- came as Canadian jets were to join the US-led bombing campaign against Islamist militants in Iraq. AFP PHOTO/PETER MCCABE (Photo credit should read Peter McCabe/AFP/Getty Images)

This October 22, 2014 photo shows police at the scene of a shooting at the National War Memorial in Ottawa, Canada. Parliament Hill's Centre Block is in lockdown after a Canadian soldier standing guard at the National War Memorial in Ottawa was shot by an unknown gunman and there are reports of gunfire inside the halls of Parliament. AFP PHOTO / Michel COMTE (Photo credit should read MICHEL COMTE/AFP/Getty Images)

The scene at the War Memorial in Ottawa http://t.co/wZoQFDtZAo http://t.co/crY3JEx5sI

#BREAKING Here is a photo from our office window of situation at war memorial. #cdnpoli http://t.co/dDg01S7SBi

This October 22, 2014 photo shows the Parliament building, and police after a shooting at the National War Memorial in Ottawa, Canada. Parliament Hill's Centre Block is in lockdown after a Canadian soldier standing guard at the National War Memorial in Ottawa was shot by an unknown gunman and there are reports of gunfire inside the halls of Parliament. AFP PHOTO / Michel COMTE (Photo credit should read MICHEL COMTE/AFP/Getty Images)

Police now searching all rooms that weren't locked http://t.co/YAVgZFau5Q

In the distance you can see the Ottawa police crouched behind cars. http://t.co/EHYM6Tk6dP

This October 22, 2014 photo shows police and medical personell moving a wounded person into an ambulance at the scene of a shooting at the National War Memorial in Ottawa, Canada. Parliament Hill's Centre Block is in lockdown after a Canadian soldier standing guard at the National War Memorial in Ottawa was shot by an unknown gunman and there are reports of gunfire inside the halls of Parliament. AFP PHOTO / Michel COMTE (Photo credit should read MICHEL COMTE/AFP/Getty Images)

They keep widening the area in lockdown http://t.co/oRraCywI3Z

This October 22, 2014 photo shows police and medical personell moving a wounded Canadian soldier into an ambulance at the scene of a shooting at the National War Memorial in Ottawa, Canada. Parliament Hill's Centre Block is in lockdown after a Canadian soldier standing guard at the National War Memorial in Ottawa was shot by an unknown gunman and there are reports of gunfire inside the halls of Parliament. AFP PHOTO / Michel COMTE (Photo credit should read MICHEL COMTE/AFP/Getty Images)

Police vehicles block a road near Parliament on October 22, 2014 in Ottawa, Ontario. Heavily-armed Canadian police backed by armored vehicles and surrounded parliament in Ottawa on Wednesday after at least one gunman shot a soldier guarding a nearby monument. Witnesses said they saw a man armed with a rifle running to the parliament building after the shooting, and some local media cited reports that there may have been a second shooter. One witness, Marc-Andre Viau, said he saw a man run into a caucus meeting the parliament, chased by police who yelled 'take cover.' That was followed by '10, 15, maybe 20 shots,' possibly from an automatic weapon, he said. 'I'm shaken,' said Viau, who works at the parliament. The soldier appeared seriously wounded. Emergency medics were seen pushing on his chest to revive him. AFP PHOTO/MICHEL COMTE (Photo credit should read MICHEL COMTE/AFP/Getty Images)

This October 22, 2014 photo shows police and medical personell at the scene of a shooting at the National War Memorial in Ottawa, Canada. Parliament Hill's Centre Block is in lockdown after a Canadian soldier standing guard at the National War Memorial in Ottawa was shot by an unknown gunman and there are reports of gunfire inside the halls of Parliament. AFP PHOTO / Michel COMTE (Photo credit should read MICHEL COMTE/AFP/Getty Images)

Police and paramedics transport a wounded Canadian soldier on October 22, 2014 in Ottawa, Ontario. Canadian police backed by armored vehicles surrounded parliament in Ottawa on Wednesday after a soldier was shot while guarding a nearby monument. Witnesses said they saw a gunman running to the parliament building after the shooting. Heavily armed police raced to seal off the building and the office of Canadian Prime Minister Stephen Harper. AFP PHOTO/MICHEL COMTE (Photo credit should read MICHEL COMTE/AFP/Getty Images)

Ambulances wait on the main street leading to the Parliament buildings in Ottawa, Ontario after multiple shootings on October 22, 2014. Gunfire echoed through the Gothic halls of the Canadian parliament Wednesday as police shot dead a gunman suspected of killing a soldier guarding a nearby war memorial before storming the building. Police said an investigation was continuing, but did not confirm earlier reports that more gunmen were involved. Heavily armed officers backed by armored vehicles sealed off the building. AFP PHOTO/Peter McCabe (Photo credit should read Peter McCabe/AFP/Getty Images)

Heavily armed police officers prepare to enter a building on the edge of a restricted zone in Ottawa, Ontario after multiple shootings on October 22, 2014. Gunfire echoed through the Gothic halls of the Canadian parliament Wednesday as police shot dead a gunman suspected of killing a soldier guarding a nearby war memorial before storming the building. Police said an investigation was continuing, but did not confirm earlier reports that more gunmen were involved. Heavily armed officers backed by armored vehicles sealed off the building. AFP PHOTO/Peter McCabe (Photo credit should read Peter McCabe/AFP/Getty Images)

An police officer stands watch outside a Starbucks in Ottawa,Ontario after multiple shootings on October 22, 2014. Gunfire echoed through the Gothic halls of the Canadian parliament Wednesday as police shot dead a gunman suspected of killing a soldier guarding a nearby war memorial before storming the building. Police said an investigation was continuing, but did not confirm earlier reports that more gunmen were involved. Heavily armed officers backed by armored vehicles sealed off the building. AFP PHOTO/Peter McCabe (Photo credit should read Peter McCabe/AFP/Getty Images)

The main street leading to the Parliament buildings in Ottawa,Ontario are filled with police after multiple shootings on October 22, 2014. Gunfire echoed through the Gothic halls of the Canadian parliament Wednesday as police shot dead a gunman suspected of killing a soldier guarding a nearby war memorial before storming the building. Police said an investigation was continuing, but did not confirm earlier reports that more gunmen were involved. Heavily armed officers backed by armored vehicles sealed off the building. AFP PHOTO/Peter McCabe (Photo credit should read Peter McCabe/AFP/Getty Images)

OTTAWA, CANADA - OCTOBER 22: An Ottawa police officer retreives a locked bicycle for a man inside the Wellington St. cordon in downtown, October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: An Ottawa police officer backs up media gathering on Elgin St. near Albert St. in downtown, October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: Police direct traffic away from the National War Memorial site as seen looking north up Elgin St. in downtown, October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: A police officer stands guard on Wellington St. in downtown, October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: A police officer stands guard near to the National War Memorial site, on October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: Parliament Hill and National War Memorial site as pictured from Mackenzie King Bridge in downtown, October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA ON - OCTOBER 22: An armoured vehicle is seen responding to a call in Ottawa Wednesday Oct.22, 2014. A Canadian soldier standing guard at the National War Memorial in Ottawa has been shot by an unknown gunman and there are reports of gunfire inside the halls of Parliament. (Tonda MacCharles/Toronto Star via Getty Images)

OTTAWA, CANADA - OCTOBER 22: Ottawa police officers stand guard along Wellington St. near the National War Memorial where a soldier was shot earlier in the day, just blocks away from Parliament Hill, on October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: Ottawa police officers stand guard near the National War Memorial where a soldier was shot earlier in the day, just blocks away from Parliament Hill, on October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: A sign is displayed at the Ottawa City Hall, 4 blocks away from National War Memorial where a soldier was shot earlier in the day, on October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

OTTAWA, CANADA - OCTOBER 22: An Ottawa police officer runs across Wellington St. near the National War Memorial where a soldier was shot earlier in the day, just blocks away from Parliament Hill, on October 22, 2014 in Ottawa, Canada. Officials are investigating multiple reports of shootings and suspects after at least one gunman shot a Canadian soldier and then entered Canada's Parliament building. (Photo by Mike Carroccetto/Getty Images)

TORONTO, ON - OCTOBER 22: Police are pictured in front of the legislative buildind in Toronto on Wednesday Oct.22, 2014. A Canadian soldier standing guard at the National War Memorial in Ottawa has been shot by an unknown gunman and there are reports of gunfire inside the halls of Parliament.MoverTORONTO, ON- OCTOBER 22 - Police officers along with security stand outside Queens park after the events in Ottawa this morning.. Colin McConnell/Toronto Star (Colin McConnell/Toronto Star via Getty Images)

Vickers held back tears as he walked slowly through the Parliament chamber the day after killing gunman Michael Zehaf-Bibeau. Harper once again vowed his nation would not cower in the face of terror and signaled a radical shift towards American-style anti-terror tactics.

"Canadians will not be intimidated," said Harper. "We will be vigilant, but we will not run scared.

"We will be prudent, but we will not panic."

Harper called both the Ottawa shootings and the hit-and-run attack this week in Quebec terrorist attacks. He then promised expanded powers for his country's anti-terror agents.

"Our laws and police powers need to be strengthened in the areas of surveillance, detention and arrest," said Harper. "They need to be much strengthened... that work will be expedited."

America's northern neighbor has laws passed after 9/11 that are aimed at tackling such problems, the Combating Terrorism Act and the Strengthening Citizenship Act to Better Protect Canadians and Strengthen Institutions, but Harper wants them further overhauled.

"We live in a dangerous world. Terrorism has been here with us for a while, and we've come dangerously close on a number of occasions," he said.

Many of Harper's words echoed speeches given by then-U.S. President George W. Bush in the days after the 9/11 terror attacks.

"In this struggle in which we are engaged, in which not only our finest values must be pushed to work, so must our unity and resolve," said the prime minister. "Those are our highest weapons, and that's what those people will face."

He also lamented the terrorists being homegrown.

"We're all aware and equal troubled that both of this week's terrorist attacks were carried out by Canadian citizens, by young men born and raised in this peaceful country," he said, before reminding his country of what is already being done to combat the threat.

"Make no mistake, even as the brave men and women of our armed forces are taking this fight to the terrorists on their own territory, we are equally resolved to fight it here."

Harper's defiance in the face of the evils of terrorism came only minutes after Vickers was given a standing ovation as he entered the House of Parliament.

The sergeant-at-arms struggled to smile and hold back tears as the entire chamber gave him a minutes-long standing ovation.

Harper ended his remarks by thanking Vickers for his 'heroism" and walking over to greet and shake his hand.

Vickers was clearly humbled by the adulation he is receiving only one day after he ended Zehaf-Bibeau's rampage.